What Is a DU Bushings

DU bushings are a type of plain bearing with a composite structure, featuring a metal backing, a porous bronze layer, and a coating of PTFE (Polytetrafluoreten). This design allows them to be self-lubricating, reducing the need for additional lubrication. They provide low friction and high durability, making them ideal for various industrial applications.

Material Characteristics

Material Composition:

• Metal Backing: Provides structural support and durability, typically made from steel or other robust metals.
• Porous Bronze Layer: Intermediate layer that holds lubrication and enhances wear resistance, with a porous structure for lubrication retention.
• PTFE (Polytetrafluoreten) Coating: Polymer layer that offers low friction, non-stick properties, and additional wear resistance.

Performance

• Wear Resistance: Designed for excellent wear resistance due to the combination of metal backing, porous bronze, and PTFE coating.
• Low Friction: PTFE coating reduces friction and energy loss, making it suitable for applications requiring minimal friction.
• Lubrication Suitability:
  • Dry Running: Operates effectively without external lubrication due to self-lubricating properties.
  • Oil-Lubricated: Can be used with oil lubrication for enhanced performance.
  • Grease-Lubricated: Suitable for applications where grease lubrication is used.
  • Water-Lubricated: Functional in water-lubricated environments, though less common.

What are DU bushings used for

DU bushings are used in a broad range of applications due to their excellent performance characteristics.

In industrial machinery, they help reduce friction and wear in rotating, oscillating, and linear movements. In aerospace, DU bushings are employed in aircraft interior components where low flammability and high reliability are crucial.

They are also found in agricultural and construction equipment, where they endure harsh conditions and heavy loads. In the food and beverage industry, DU bushings contribute to the efficiency and hygiene of processing equipment.

They support smooth movement and reduce maintenance needs in material handling equipment, as well as in medical and scientific instruments where precision is vital. Additionally, DU bushings are used in packaging equipment, pneumatic and hydraulic cylinders, pumps and motors, railroad and tramway systems, textile machinery, and valves, providing durability and dependable performance across these varied sectors.

Their self-lubricating properties, low friction, and robustness make them a versatile choice for many demanding applications.